Wagon dump



F. W. LEHRACK.

WAGON DUMP. 'IhPPuc'Anon FILED MAR; 21. I92l.

1,43 ,24 1 .Patented Dec.12,1922.

Patented Dec. 12, 1922.

METRE STATEfi rarest -srca.

FREDERICK W. LIEHRACK, KANSAS IMPLEMENT COMPANY, OF KEWANEE,

WAGON DUMP.

Application filed March 3, 1921. Serial No. 449,450.

To all whom it may concern:

Be it known that I, FREDERICK W. LEH- RACK, a citizen of the UnitedStates, residing at Kansas City, in the county of Jackson and State ofMissouri, have invented certain new and useful Improvements in WagonDumps; and I do declare the following to be a full, clear, andexact,-description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to the letters and figuresof reference marked thereon, which form a part of this specification.

This invention relates to vehicle dumps and particularly to an elevatorfor raising one end of a vehicle so as to incline the body portionthereof whereby the contents may be dumped therefrom.

The invention consists in certain novel parts and ombinations of parts,all of which will be described hereinafter, particular attention beingdirected to the elevating platform which also serves as a chock orretaining means to prevent longitudinal movement of the vehicle when oneend of it is being raised to incline the body portion.

In the drawings,

Pg. 1 is a perspective view of a vehicle elevating means applied.

Fig. 2 is a sectional view through the same in its non-functionalposition, and

Fig. 3 is a view showing the position of the platform after the chock orguard has begun to move.

Referring now to the drawings by numerals of reference:

1 designates amain or stationary platform which consists of standards 2,3, 4 and 5 connected by side braces 6-6 and 7-7 and end braces 8-8 and9-9 whereby a rectangular frame is provided. The standards or uprights2, 3, 4 and 5 are in the forms of angles and constitute guides for thevertical bars 10, 11, 12 and 13, fastened at their upper ends to arectangular guard frame 14, having a lateral peripheral flange 15, asshown in Fig. 1.

The upright guides 10, 11, 12 and 13 are also angles which slide in theguides 2, 3, 4 and 5. The angles 10 and 11 carry cross bars 16 and acorresponding cross bar 16' is carried by the angles 12 and 13. Thecross bars or angles 16 and 16' carry parallel angles 17 and 17' asshown.

support parallel shafts 18 and 19 and complementary shafts 20 and 21 aresupported on the cross bars 9-9. The shaft 18 carries sprockets 22 nearits respective ends which align with sprockets 23 near the respectiveends of the shaft 20. Corresponding sprockets 24 are carried by theshaft 19 and align with complementary sprockets 25 on the shaft 21. Thesprockets 22 and 23 are engaged by a chain 26 which 18 fastened to thebar 17. On sprockets 24 and 25 is a chain 27 fastened to the bar17'.These two chains are fastened together by a connection 28 so that theymust move in unison. A chain 29 passes around sprockets 22 and 23 on theend of the shaft 20 oppos1te to the chain 26. It has a complementarychain 30 which passes around the sprockets 24 and 25 on the end of theshaft 19, opposite to the chain 27.

The chains 29 and 30 are fastened together by fastening connections (notshown) similar to 28 and chains 29 and 30 are fastened to the bars 17and 17 respectively so that theyserve as equalizers to exert equal pullon all of the bars 10, 11, 12 and 13.

Beneath the frame 14 is a channel 31 connected to a piston rod 32, onone end of which is fastened a piston and a hydraulic cylinder 33 sothat the piston rod 32 can be raised to raise the frame 14 verticallywith respect to the frame 1.

The cross bars 8-8 The frame 14 is provided with an in- Q wardlyprojecting flange 34, surrounding a central rectangular opening 35. Theflange 34 supports a movable platform 36 which may be normally heldabove the flange 34 and level with the flange 15 by the upstanding pins37 on the channels 38 and 39. carried by the main frame 1 and shown assup ported by the bars 7-7.

When the device is in its normal position, the flange 15 will besubstantially level with the floor 40, which supports the vehicle 41,the platform 36 being supported in line with the -floor 40 and theflange 15 by the upstanding pins 37. The vehicle 41 may then movethereon so that the front wheels may rest on the platform 36. Then powerwill be generated within the hydraulic cylinder 33 to raise the pistonrod 32 and with it, the frame 14 and its guide or supporting members 10,11, 12 and 13. I

The initial movement of the frame 14 will be independent of the platform36, the frame 14 continuing to rise until the flange 34 comes in contactwith the bottom face of the platform 36 so that the front wheels 42 ofthe vehicle will be received in the recess 43 or Within the frame 14.Then the platform 36 will continue to rise with the frame 14 so that thefront portion of the vehicle will be raised and the body inclined intodumping position, as shown.

It will be apparent that on account of the geared connections, the liftWill be equalized throughout the frame 14 and its supports and that themovable platform 36 will so function that the front wheels of thevehicle will be received within the frame 14 which serves as a shock orretarding means for preventing longitudinal movement of the vehicle asit is being raised. when the vehicle has been dumped, the piston rod 32may be permitted to recede within the cylinder 33 to lower the frame 14so that the flange 15 will be in line with the floor 40.

As it recedes to its lowermost position, the platform 36 will rest uponthe upstanding pins on support 37 which are substantially in line withthe floor that is, immediately below it. Therefore, the top surface ofthe platform 36 will be in line with the top flange 15 and with thesurface of the floor 40, permitting the vehicle to be moved away fromthe elevator or dumping'device.

From the'foregoing it will be apparent that the device is simple inoperation, inexpensive to manufacture and that it will automaticallyretain the motor vehicle against longitudinal movement as it moves intofunctioning position and automatically release the motor vehicle forlongitudinal movement when it goes out of functional position.

What I claim and desire to secure by Letters Patent is:

1. A wagon dumping device comprising a platform, a vertically movableplatform frame having limited vertical movement with respect to theplatform whereby vertical movement of the frame in an upward directionwill cause a portion :of it to raise above the platform before theplatform is raised, and means for supporting the platform even with thetop of the frame when the frame is in its lowered position.

2. A wagon dumping device comprising a platform, a vertically movableplatform frame having an inwardly projecting platform supporting flange,means for normally holding the platform off the flange and maintainingit substantially level with the top of the frame, and means for raisingthe frame so that the flange will raise the platform during its upwardtravel to support the platform below the top of the frame.

3. In a wagon dumping device, a platformto receive the end of a vehicle,a platform lifting frame having side walls extensible above theperimeter of the platform, and means for raising the frame.

4. In a wagon dumping device, a platform to receive the end ofa'vehicle, a platform lifting frame having side walls extensible abovethe perimeter of the platform, means for raising the frame, and meansfor equalizing the lifting force over all four sides of the frame.

In testimony whereof I aflix my signature.

FREDERICK W. LEHRACK.

